he Penguins advanced in the playoffs with a 4-3 overtime win over the New York Islanders in Game 6 of their best-of-seven first-round postseason series tonight at Nassau Coliseum.The Penguins' Brooks Orpik won it on a shot from the left point at 7:49 of overtime.The Penguins will next face the Ottawa Senators. No schedule for those games has been announced.John Tavares opened the scoring for the Islanders when he took a backhanded pass from Josh Bailey and scored from the right hash marks, making it 1-0 at 5:36 of the first period.The Penguins tied it, 1-1, at 7:39 of the first period. Sidney Crosby carried the puck over the blue line and took a backhanded shot. New York goaltender Evgeni Nabokov stopped the shot, but Jarome Iginla poked the puck in from the crease.With just 37 seconds left in the first period, Colin McDonald put the Islanders ahead, 2-1. He had an open net for a one-timer after Penguins goaltender Tomas Vokoun was pulled to the right post to defend Keith Aucoin, who instead of shooting from the bottom of the left circle passed across the top of the crease to McDonald.